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Dołączył: 29 Paź 2010
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Skąd: England
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 Wysłany: Pon 10:30, 22 Lis 2010 Temat postu: ugg boots sale Rotary valve pneumatic device _707 |
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Rotary valve pneumatic devices
Small devices, the output torque,[link widoczny dla zalogowanych], ● 4 valve 37 rotating flexible, and high reliability. Spiral double piston cylinder valve pneumatic devices (Figure 1) from the upper and lower ends of the cylinder head fastening the middle of rolling bearings for the cylinder head with the following supporting the output shaft through the cylinder, to form a closed cylinder. The output of the cylinder with an axial symmetry axis of the lower part of the two under the right piston helical groove, and with the next piston in the cylinder guide plate and the fastening tabs on the output shaft handsets equipped with a two axisymmetric spiral groove on the left piston. Equipped with a piston and cylinder on the guide plate and positioning the same key. Output shaft with roller shaft, both ends of roller shaft rolling total of four sets, from both sides near the center line of the output shaft, two sets of matches in the next roll of the two piston spiral slot, far away from both sides of the output shaft centerline , two sets of matching scroll spiral slot in the piston. Connected with the valve under the head end. The output shaft on the cylinder head at the end of the square for alignment with the output shaft rotation angle and direction the size of the device. Figure 1 pneumatic device 1. Block z. I plug under the tongue 3 piston positioning keys 4. If plug on 5. Output shaft 6. Roller shaft 7. On the cylinder head 8. There are instructions on the transfer piston positioning device 0 key 10. Scroll sets l1. Under the head AB, c. Chamber 0.4 ~ 0,6 MPa when the purification of compressed air into the same time as shown in Figure 2, adjust the output from the control room of 0.02 into A, B two-bedroom, push the upper and lower output of the piston along the axial ~ O. 1MPa bellows pressure signal input after the pivot move in a straight line in question,[link widoczny dla zalogowanych], the spiral groove and the location of roller shaft continued to produce a torque on the main lever. This moment of change to overcome the feedback spring, rolling sets and roller drive shaft clockwise axial force output after moving up to the main lever to open the drive to turn the slip castration. Fixed directional keys on the cylinder and piston gas source on the E channel guide, the gas into the cylinder C, with the same board is to limit the rotation of the piston. 0.4 ~ 0.6MPa when the purification of the bottom of the slide valve when the gas source close to the cylinder A, B two-bedroom in the compressed air into the C, F, the output channel axial counter-clockwise turn, while the A, B two the gas chamber through the slide valve by the F-channel move. This will drive the valve open and closed. Cavity through the atmosphere, so that the cylinder and the cylinder C, A, B generate pressure chamber 1, with a pressure valve pneumatic signal locator device control is poor, under the piston down, the piston moves upward in a straight line. The output shaft with two pistons on the principle of the spiral angle of counterclockwise rotation. Yan, a 38 valve 1991 and rotating the cam drive to promote the feedback lever, so that the feedback spring tension. In the spring force, the main lever to form a feedback torque signal enhancement with the control room pressure and mechanical torque generated by the feedback received from the drive torque is equal to the force balance in the state. At this point a certain pressure input signal, the two pistons to a straight line corresponds to a certain schedule, the output shaft to correspond to a certain angle, to achieve the valve opening position any pause. With the control room pressure signals gradually weakened, the valve action pneumatic device is the inverse of the above action. Ring 2 with pneumatic air pressure signal locator device I. Bellows 2. Pivot 3. Main lever 4. Feedback spring 5. Slide valve 6. Output shaft 7. Cam 8. Feedback lever A, B, c. Chamber E, F air 2 + channel current signal with the pneumatic valve positioner device control principle shown in Figure 3, from the control room regulator signal 4 ~ 20mA current input torque motor, the iron core magnetization. Under the permanent magnetic field to produce torque core,[link widoczny dla zalogowanych], close to the nozzle, and gradually plug flow, the slide valve pressure gradually increases, push the sliding spool down, open E channel, the gas source into the cylinder C room. Slide valve closed while the gas source to the cylinder A, B, F-channel two-bedroom, and the A, B two-bedroom gas through the F channel and the slide valve chamber through the atmosphere, the cylinder and the cylinder C, A, B generate pressure chamber, so that the next piston down, the piston moving in a straight line up the force plate output shaft driven fan counterclockwise rotation, to promote the cam, rocker arm so that the feedback through the spring tension. In the spring force, so that the movable iron core to produce a feedback torque, with the control room enhance the current signal generated by the drive torque and mechanical torque is equal to the feedback received, they are in balance. At this point a certain input signal current, the output shaft to correspond to a certain angle,[link widoczny dla zalogowanych], in order to achieve any of the valve opening position of the halt, to the valve opens, closing and cutting purposes. As the control current signals gradually weakened,[link widoczny dla zalogowanych], the valve in the pneumatic device to reverse the action action. 3 with the current signal loop pneumatic positioner device 1. Motor 2. Trowel core 3. Spray ■ 4. Slide valve 5. Output 6. Cam 7. Feedback spring A, B, c. Chamber E, F_ gas pool channel ●
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